7705425 has 48 divisors (see below), whose sum is σ = 15693440. Its totient is φ = 3248640.

The previous prime is 7705409. The next prime is 7705427. The reversal of 7705425 is 5245077.

It is not a de Polignac number, because 7705425 - 2⁴ = 7705409 is a prime.

7705425 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7705392 and 7705401.

It is not an unprimeable number, because it can be changed into a prime (7705427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6261 + ... + 7389.

Almost surely, 2^7705425 is an apocalyptic number.

7705425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7705425 is an abundant number, since it is smaller than the sum of its proper divisors (7988015).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7705425 is a wasteful number, since it uses less digits than its factorization.

7705425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 7705425 is about 2775.8647301337. The cubic root of 7705425 is about 197.5144464143.

The spelling of 7705425 in words is "seven million, seven hundred five thousand, four hundred twenty-five".